Elevator canvas for binders, grain conveyers, and the like



H. M. GRAHAM. ELEVATOR CANVAS FOR BINDERS, GRAIN CONVEYEBS, AND THELIKE.

, APPLICATION FILED MAR. 29. 1922. l,%35,600.

Patented Nov. 14, 1922.

Patented Nov. 1a, 1922.

UNHTE lgldibflti assay MARKER GRAHAM, or rna'ro, sasnarcnnwan, CANADA.

ELEVATCE CANVAS-FOR iarnnn'ns, GRAIN- CONVEYEBS, AND THE LIKE.

Application mean-arch 29, 1922. Serial No. 54 7,8 16.

T 0 all w/wmit may concern. 7, V

Be it known that I, HARRY M.,GRAHA1;, citizen of the United States,residing at Plato, Province of Saskatchewan, Dominion of Canada, haveinvented certain new and useful Improvements in Elevator Can vas forBinders, Grain Conveyers, and the like, of which the following isaspecification.

My invention relates to grain conveyors, binders and the like, and hasfor its object to provide an improved endless belt of canvas, which willconvey the grain and straw smoothly without holding back the strawduring any part of its travel forward with the belt.

In common with other canvases of this class, transversely running slatsare also used for my belt for the purpose of carrying the grain forward.The disadvantage, however, with the ordinary slats resides in the factthat they, being generally made of wood, cannot yield or bend whenpassing around a roller. On that account, a crack or opening will formalong the forward edge of the slat and between the same and theunderlying canvas, when passing around a roller. As a consequence, strawis apt to get into this crack at that time and when the canvas is againstraightened out, will be pinched and held fast by the slat, and thiswill interrupt the smooth running of the canvas.

To overcome and entirely eliminate this disadvantage, I provide means tocover up the cracks between the slats and the canvas and from extensivetests, I have found that a hinder or conveyer provided with my improvedcanvas belt, can run without interruption and perform its work in a muchbetter and more efficient manner, than, if provided with the canvas beltof ordinary construction.

In the accompanying drawing, one embodiment of my invention isillustrated and:

Figure 1 represents, in perspective view, a fragment of a canvasstretched over a roller, and

Figure 2 is a cross section, on a larger scale, of the canvas with oneslat just passing over the roller.

p The reference numeral 10 represents a roller of an ordinary grainbinder over which is stretched a canvas 11 held together at its ends bymeans of straps 12 and buckles 13, permitting r ecessary adjustment inthe length of the canvas. Transverselyof the length direction of thecanvas is provided a number of slats 1 1 of wood orany other suitablematerial, secured on the canvas in any suitable manner as by means ofrivets or tacks 15. The slats are spaced apart in the usual manner toform shallow pockets or recesses for the grain and straw to collect in.As best shown'in Figure 2, when a slat passes around the roller 10, theforward bottom edge of the slat will stand away slightly fromthe surfaceof the canvas and form a crack 16 and in this crack straw is apt togather, and when the canvas again is straightened out, the crack willclose and hold the straw tightly therein. To prevent this, I provide afolded strip of canvas 17 which is inserted between each slat and thecanvas belt and held down by the same rivets or tacks 15 as are used forthe securing of the slats. At 18 is shown a stitched sea-m along theforward edge of the slat 14 in order to make sure that no opening willbe formed between the canvas belt and the strip of canvas 17 at thispoint. Beyond this stitching, the strip forms a flap 19, which has aboutthe same width as the thickness of the slat 14. It will now be readilyseen, that when the canvas belt travels in the direction of the arrow X,the flap 19 will fold around the front side of the slat 14 and entirelycover up the crack 16 formed between the latter and the canvas belt orin this case,

the strip.

In some cases, it might be advisable to provide a flap along each sideof the slat, particularly if the belt is reversible.

Having thus described the invention, what is claimed as new is:

1. An endless belt of pliable material, strips of similar materialarranged in spaced relation transversely of said belt, and a slat overeach strip suitably secured to the strip and the belt, each strip havinga loose flap projecting beyond the edge of the slat.

2. An endless belt of pliable material, strips of similar materialarranged in spaced relation transversely of said belt, and a slat overeach strip suitably secured to the strip and the belt, each strip havinga loose flap projecting beyond the edge of the slat, the width of theflap being approximately the same as the thickness of the slat.

3. An endless belt of pliable material, strips of similar materialarranged in spaced relation transversely of said belt, and a slat overeach strip suitably secured to the strip and the belt, each strip havinga loose flap projecting beyond the edge of the slat, the Width of theflap being approximately the same as the thickness of the slat, saidstrip being secured by means of stitches along the edge of the slat.

l. An endless belt for binder elevators, comprising a length of canvashaving strap and buckle connection between its ends, transverse Woodenslats secured in spaced relation on the outer side of the belt, and afolded canvas strip inserted between the belt and each slat, the stripbeing stitched to the belt along the edge of the respective slat, a flapbeing formed on said strip beyond said edge.

5. An endless belt for binder elevators, comprising a length of canvashaving strap and buckle connection between its ends, transverse Woodenslats secured in spaced relation on the outer side of the belt, and afolded canvas strip inserted between the belt and each slat, the stripbeing stitched to the belt along the edge of the respective slat, a flapbeing formed on said strip beyond said edge, the width of the flap beingapproximately the same as the thickness of the slat.

In testimony whereof I afiix my signature.

HARRY MARKER GRAHAM. [L. 8.]

